Fastener



Sept. 14,1937.

A. BOENECKE FASTENER Filed Aug. 30, 1935 ALFRED BOEN EC KE By ATTOFNEY lnven tor:

Patented Sept. 14,1937

OFFICE I rssranar Alfred Boenecke. Berlin, Germany Application August so, 1935. Serial No. sacral In'Gennany September 8, 1934 3 Claims.

be used for all kinds of articles, for example for handbags, garments or the'like.

The fastener. comprises two portions, viz., a

5 male portion and a female portion. The rigid outer edges of the male and female-portions are bent over in hook-like fashion, and the'closing of the fastener takes place by the hooked edge 1' .the male portion snapping from below into the 410 hooked edge of the female portion.

The invention consists in the fact that theeffective line of engagement formed by the hooked edges of the male and female portions is always greater in length than the width of the is fastener.

In this manner itis accomplished that the fastener is capable of. withstanding considerable tensile'stresses without being damaged or without the same being opened unintentionally.

20 The invention will be described more fully with reference to the accompanying "drawin which illustrates a .possible form of embodiment of the invention.

Fig. l is a section through the fastener along 25 the line 1-1 in Pig. 2.

Fig. 2 is a plan view of the fastener, whilst Fig, 3 is a-section'through the fastener alone the line m-m in Fig. 1. i Figs. 4, 5.and 6 are plan views of different 30 fasteners showing that the fastener may be fur-' nished with many different forms according to its particular use.

In all of the figures of the drawing the fastene is shown in its closed condition. 35 The fastener comprises two parts, viz., the male portion 3 and the female portion 5. The male portion 3 is connected with that part 4 of the article which is to besecured. If, for example,

the article is a ladys bag, the part 4 bearing the.

the fastener may be secured in simple fashion 50 to the article 4 by rivets.

The female portion 5 has an outer edge I which is bent in hook-like fashion in opposition to the edgei, so that the two edges i and O are that each portion has av pair of stop faces one on each side of each right-angled section I and 55 capable of readily engaging. The leaf spring a 55 of the'female portion 5 serves to press two ,erted on the spring 3 such that the front end I 7 (Cl. 292-302) .rhis invention relates to a fastener, which may parts 3 and I tightly together in theclosed condition of the fastener. The female portion 5 may 1 have the form shown'in Fig. 2,, and is secured to the a'stic'le in simple fashion by means of rivets. I 5 Upon the closing of the fastenerthe tongue 2 of the male portion 3 is introduced in such fashion into the female portion 5 in opposition to the pressure of the spring 3 that the edge I engages behind the edge 8. thefastener then being closed.

The ends I! of the edge 8 are bevelled, so that the introduction of the male portion -3 takes place in sliding fashion without obstruction. The actual engagement occurs along the two-semi-circular edges I and 6, the fastener-being flat, as the part 3 does not rest on the part 5. In place of the semi-circular form there may also be employed a discontinuous line. In every case, however, the line of engagement between 'the edges i and 6 is always greater in length than the width of the fastener.

Opening of the fastener is performed in simple manner by" pressing one finger against the upper portion '9. In this way a counter-pressure is exof the'springfl assumes the position shown'in Fig. 1 in broken lines, allowing the two edges i and i to disengage. with the finger still resting on the upper portion !.the male portion 3 isthereupon y'lithdrawn and thus released from the female portion 8. p

In order that the finger may obtain a proper hold on the part 3 the surface of the latter may be milled. grooved or raised.

The fastener may include a key casing il in order to be able to lock the fastener by means of the bolt or latch l3, this belt being moved below the front end I of the spring 8. It will be quite evident from the present invention that due to the shape of the corresponding hook-shaped edges i 40 and I that they will cause a centering action for r the portions 3 and I at all times when engaged.

The visible portion of the fastener may be variously formed, as shown more particularly by Figs. 4, 5 and 6. The surface of the-fastener mayv be made'ornamental, so that the actual object of the fastener is not apparent from its general appearance. The fastener may be made of plastic materials, for example artificial resin or the 6 and these stop faces contact with each other when the fastener is in closed position.

What I claim as new and desire to secure by Letters Patent is:

1. A fastener for handbags, garments and the like, comprising a pair of interengaging portions, each portion having approximately right-angle flanges as effective surfaces of engagement and an engaging face on one side of each flange, and

a spring secured in one of said, portions at a point opposite its right-angle flange and extending to a free end toward said last mentioned flange to maintain the two right-angle flanges interengaged when the faces of the portions abut against each other and to force and maintain the two portions together in closed position by the free end of the spring bearing against the other'of said portions, each portion having a pair of stop faces one on each side of each right-angled flange which stop faces contact with each other when the fastener is in closed position.

2. A fastener according to claim 1 in which one of the portions is provided with an actuating button and the spring is secured in the, other portion. 7

3. In a fastener, a male portion, a female portion, a hooked edge to the said female portion, a hooked edge to the said male portion bent in opposition to the hooked edge on the said female portion and adapted to engage therewith when the fastener is closed, a. spring holding the said hooked edges in engagement, and a bolt adapted to be moved under the free edge of the said spring to prevent disengagement of the said edges, the line of engagement of the said edges being greater in length than the width of the fastener.

Awash nomcxn. 

